Not quite a walk nor canter a clumsy step after the other I'm bad at this lmao

I speak with a smirk, a bite in my bark. I mimic the truth, but leave my own mark. What am I, when humor's my art?

Did you hear about the cartoonist who was found dead at his home? They say the details were . . .

Take away its second letter and kids use it on a playground Keep it and make a tear better Or at a hospital, close a wound

A pocket-sized wizard, transforming tasks with a click, ally to the curious, a tinkerer's trick.